https://www.pcgamer.com/pubg-teases-a-snow-map-in-e3-trailer/

During Microsoft's E3 2018 press conference, a trailer for PlayerUnknown's Battlegrounds had a surprising tease at the very end, showing what appeared to be a brand new snow map. In just a brief glimpse, we see a first-person view of someone following the snowy footprints of another player.

Over on PUBG's official Twitter, a tweet confirmed that the map will be coming in winter 2018. What isn't clear, however, is whether this map is the same map that PUBG Corp first teased back in Game Informer's 2017 June issue. Dubbed Map 3, little is known about this map other than it's an Adriatic island with a snowy mountain range at its center, but looking at the brief shot above, the terrain doesn't appear to be all that mountainous. It could be a new map entirely.